What is REST Client?
REST Client is a free online tool for testing REST APIs and HTTP endpoints. Send GET, POST, PUT, DELETE, PATCH requests, configure headers and authentication, inspect responses, and debug API integrations without installing any software.
Built with modern web technologies, this browser-based REST client provides a complete API testing environment with syntax highlighting, response formatting, and request history for efficient API development and debugging.
Why Use REST Client?
This tool simplifies REST API testing and development. Quickly test endpoints, validate responses, debug authentication issues, and explore APIs without desktop applications or command-line tools.
Perfect for web developers, API developers, QA engineers, and integration specialists who need to test REST APIs, validate endpoints, and troubleshoot integrations efficiently from any browser.
Common Use Cases
API Development: Test REST endpoints during development, validate request/response formats, and ensure proper API behavior.
Integration Testing: Test third-party API integrations, verify authentication flows, and validate data exchanges between systems.
Debugging: Troubleshoot API issues, inspect response headers, analyze error messages, and diagnose connectivity problems.
API Exploration: Discover API capabilities, test different endpoints, experiment with parameters, and understand API documentation.
How to Use REST Client
Enter the API endpoint URL and select the HTTP method (GET, POST, PUT, DELETE, PATCH). Add headers for authentication or content type, and include a request body for POST/PUT requests if needed.
Click 'Send Request' to execute the API call. View formatted responses with syntax highlighting, inspect response headers, check status codes, and analyze timing information for comprehensive API testing.